100011111222 has 64 divisors (see below), whose sum is σ = 226322926848. Its totient is φ = 29195280000.

The previous prime is 100011111217. The next prime is 100011111227. The reversal of 100011111222 is 222111110001.

It is an interprime number because it is at equal distance from previous prime (100011111217) and next prime (100011111227).

It is a junction number, because it is equal to n+sod(n) for n = 100011111198 and 100011111207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100011111227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43897 + ... + 449387.

It is an arithmetic number, because the mean of its divisors is an integer number (3536295732).

Almost surely, 2^100011111222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100011111222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113161463424).

100011111222 is an abundant number, since it is smaller than the sum of its proper divisors (126311815626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100011111222 is a wasteful number, since it uses less digits than its factorization.

100011111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405645.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 100011111222 its reverse (222111110001), we get a palindrome (322122221223).

The spelling of 100011111222 in words is "one hundred billion, eleven million, one hundred eleven thousand, two hundred twenty-two".